I have seen most of the UFO footage on the web that is worth seeing. I found this today and was intrigued.
This video is pretty strange. The light moving across the sky seems to have some sort of contrail behind it. It looks like the tail of a comet.
The light moves across the frame and then goes behind a cloud.
The video then zooms in on the object and something strange happens. The light begins so spiral inward right before the end of the video.